Knoxville Weather Forecast

    • 73
    • 91

    Thunderstorms Likely

    • 61
    • 85

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 60
    • 77

    Slight Chance Rain Showers

    • 66
    • 85

    Mostly Sunny

    • 71
    • 92

    Mostly Sunny

Today 20 Jul Knox

Thunderstorms likely with a chance of Showers. Patchy smoke. Highs around 90. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 60 percent. Heat index Values up to 102.

Tonight 20 Jul Knox

Partly cloudy this Evening, then becoming mostly cloudy. A chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Not as cool with Lows in the lower 70s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

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Knoxville Temperature Statistics

July Temperature

Galesburg Municipal Airport (7.5 miles)

  • Lowest 8 July, 2026

    60.6 °F

  • Average July

    77.2 °F

  • Highest 18 July, 2026

    91.8 °F

Climate (2021–2026)

Galesburg Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.5 °F
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